JPS637689B2 - - Google Patents
Info
- Publication number
- JPS637689B2 JPS637689B2 JP4027481A JP4027481A JPS637689B2 JP S637689 B2 JPS637689 B2 JP S637689B2 JP 4027481 A JP4027481 A JP 4027481A JP 4027481 A JP4027481 A JP 4027481A JP S637689 B2 JPS637689 B2 JP S637689B2
- Authority
- JP
- Japan
- Prior art keywords
- thyristor
- parallel
- main
- circuit
- thyristors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000003287 optical effect Effects 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims 1
- 102100036829 Probable peptidyl-tRNA hydrolase Human genes 0.000 description 17
- 101001135770 Homo sapiens Parathyroid hormone Proteins 0.000 description 16
- 101001135995 Homo sapiens Probable peptidyl-tRNA hydrolase Proteins 0.000 description 16
- 238000010586 diagram Methods 0.000 description 6
- 230000002441 reversible effect Effects 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 108090000445 Parathyroid hormone Proteins 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M5/257—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/096—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the power supply of the control circuit being connected in parallel to the main switching element
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/10—Modifications for increasing the maximum permissible switched voltage
- H03K17/105—Modifications for increasing the maximum permissible switched voltage in thyristor switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
- H03K17/722—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region with galvanic isolation between the control circuit and the output circuit
- H03K17/723—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region with galvanic isolation between the control circuit and the output circuit using transformer coupling
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
- H03K17/725—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for ac voltages or currents
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Conversion In General (AREA)
- Thyristor Switches And Gates (AREA)
- Electronic Switches (AREA)
Description
【発明の詳細な説明】
本発明は、逆並列に接続した複数個の主サイリ
スタを光補助サイリスタを用いて点弧させる逆並
列サイリスタ点弧装置に関し、特に、高耐圧の光
補助サイリスタを要することなく、高価な光補助
サイリスタの使用個数を削減するとともに、その
光補助サイリスタにより主サイリスタの障害発生
をも監視し得るようにしたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anti-parallel thyristor ignition device for igniting a plurality of main thyristors connected in anti-parallel using an optically assisted thyristor, and in particular, to a device for igniting a plurality of main thyristors connected in antiparallel using an optically assisted thyristor. In addition to reducing the number of expensive optically auxiliary thyristors used, the optically auxiliary thyristor can also monitor the occurrence of a failure in the main thyristor.
従来、この種逆並列サイリスタ点弧装置におい
ては、点弧に使用する光補助サイリスタが高価で
あるため、経済性の点から多数の主サイリスタを
１個の光補助サイリスタによつて点弧させること
が望まれていた。一方、複数個直列に接続した主
サイリスタを１個の光補助サイリスタによつて点
弧させるには、一般に、それら複数個の主サイリ
スタが直列に整流する電圧がその１個の光補助サ
イリスタに印加されるので、高耐圧の光補助サイ
リスタが必要となる。また、この種サイリスタ点
弧装置における主サイリスタの障害発生の監視に
は、直列に接続した複数個の主サイリスタ毎に障
害発生の監視を行なう場合もあるが、一般には、
個々の主サイリスタについて個別に障害発生を監
視し得るようにするとともに、装置を小型化、低
廉化することが望まれていた。 Conventionally, in this kind of anti-parallel thyristor ignition device, since the optically auxiliary thyristor used for ignition is expensive, from the point of view of economic efficiency, it is not possible to ignite a large number of main thyristors by one optically auxiliary thyristor. was desired. On the other hand, in order to ignite multiple main thyristors connected in series by one optically auxiliary thyristor, generally the voltage rectified in series by the plurality of main thyristors is applied to the one optically auxiliary thyristor. Therefore, a high voltage auxiliary thyristor is required. Furthermore, in order to monitor the occurrence of a failure in the main thyristor in this type of thyristor ignition device, the occurrence of a failure may be monitored for each of a plurality of main thyristors connected in series, but in general,
It has been desired to be able to individually monitor each main thyristor for failure occurrence, and to make the device smaller and cheaper.
かかる従来の逆並列サイリスタ点弧装置の回路
構成の例を第１図乃至第３図に示すと、まず、第
１図に示す点弧装置においては、多数のサイリス
タTH１〜THnによる直列逆並列接続のサイリス
タ整流回路における各主サイリスタに個別に光補
助サイリスタPTH１〜PTHnをそれぞれ組合わ
せて点弧回路を個々に構成してあり、点弧回路と
しては構成が単純で確実な点弧制御が可能ではあ
るが、主サイリスタと同数の光補助サイリスタを
必要とするので、極めて高価となつた。また、第
２図に示す点弧装置においては、逆並列に接続し
た２個の主サイリスタTH１，TH２およびTH
３，TH４をそれぞれ光補助サイリスタPTH１
およびPTH２により点弧させ、さらに、第３図
に示す点弧装置においては、直列逆並列に接続し
た４個の主サイリスタTH１〜TH４毎に１個の
光補助サイリスタPTH１により点弧させ、第１
図示の点弧装置と比べて、それぞれ1/2並びに1/4
の個数の光補助サイリスタによつて点弧可能であ
り、点弧装置の価格を低廉にすることができる反
面、必要な回路素子数が増大して構成がやや複雑
になり、また、特に、第３図示の点弧装置におい
ては、光補助サイリスタに２個の直列接続主サイ
リスタの整流する電圧が印加されるので、高耐圧
の光補助サイリスタを必要とするなど、上述した
とおりにそれぞれ種々の欠点があつた。 Examples of circuit configurations of such conventional anti-parallel thyristor ignition devices are shown in FIGS. 1 to 3. First, in the ignition device shown in FIG. Each main thyristor in the thyristor rectifier circuit is individually combined with optically auxiliary thyristors PTH1 to PTHn to form an individual ignition circuit, and the ignition circuit has a simple configuration and is capable of reliable ignition control. However, it was extremely expensive because it required the same number of optically auxiliary thyristors as the main thyristors. In addition, in the ignition device shown in Fig. 2, two main thyristors TH1, TH2 and TH
3, TH4 are each optically auxiliary thyristor PTH1
Furthermore, in the ignition device shown in FIG.
1/2 and 1/4 respectively compared to the ignition device shown
Although the ignition can be performed using as many optically assisted thyristors as possible, and the price of the ignition device can be reduced, the number of required circuit elements increases and the configuration becomes somewhat complicated. In the ignition device shown in Figure 3, the voltage rectified by the two series-connected main thyristors is applied to the optical auxiliary thyristor, so a high voltage auxiliary thyristor is required, and each has various drawbacks as described above. It was hot.
また、この種サイリスタ整流回路において主サ
イリスタの故障監視を行なうようにした従来の回
路構成を第４図に示すと、逆並列接続した２個の
主サイリスタ毎に抵抗と発光ダイオードとの直列
接続回路を並列に接続し、発光ダイオードの出力
光を介して主サイリスタの故障発生を監視するよ
うになつており、発光ダイオードの出力光の監視
に高価なライトガイドを２個の主サイリスタ毎に
必要として、構成が複雑となつて高価になるばか
りでなく、発光ダイオードには、ライトガイドを
含めた監視信号伝送系の特性を考慮して比較的大
きい電流を流す必要があり、発光ダイオードの特
性劣化あるいは寿命短縮が問題となつた。 Furthermore, the conventional circuit configuration for monitoring main thyristor failure in this type of thyristor rectifier circuit is shown in Fig. 4. For each of the two main thyristors connected in anti-parallel, a series connection circuit with a resistor and a light emitting diode is used. are connected in parallel to monitor the occurrence of a failure in the main thyristor via the output light of the light emitting diode, and an expensive light guide is required for each two main thyristors to monitor the output light of the light emitting diode. Not only is the configuration complicated and expensive, but it is also necessary to run a relatively large current through the light emitting diode, taking into consideration the characteristics of the monitoring signal transmission system including the light guide, which may cause deterioration of the characteristics of the light emitting diode or Shortened lifespan became a problem.
なお、第４図示の回路構成例は、点弧回路を省
略して後述するように自己点弧を行なうようにし
た場合について示してある。 The circuit configuration example shown in FIG. 4 is for a case where the ignition circuit is omitted and self-ignition is performed as described later.
本発明の目的は、上述した従来の種々の欠点を
除去し、２直列逆並列に接続した計４個の主サイ
リスタ毎に１個の光補助サイリスタを組合わせて
点弧させるようにしても、高耐圧の光補助サイリ
スタを用いる必要がなく、主サイリスタ１個分の
電圧しか印加されないようにした安価に製造し得
る逆並列サイリスタ点弧装置を提供することにあ
る。 The object of the present invention is to eliminate the various drawbacks of the conventional art described above, and to fire the auxiliary thyristor by combining one optically auxiliary thyristor for every four main thyristors connected in two series and anti-parallel. It is an object of the present invention to provide an anti-parallel thyristor ignition device which can be manufactured at low cost and does not require the use of a high voltage auxiliary thyristor and only applies the voltage equivalent to one main thyristor.
本発明の他の目的は、上述した計４個の主サイ
リスタにおける故障発生を簡単かつ安価な構成の
監視回路によつて監視し得るようにした逆並列サ
イリスタ点弧装置を提供することにある。 Another object of the present invention is to provide an anti-parallel thyristor ignition device in which the occurrence of a failure in the above-mentioned four main thyristors can be monitored by a simple and inexpensive monitoring circuit.
すなわち、本発明逆並列サイリスタ点弧装置
は、同一極性にして互いに直列に接続した２個の
サイリスタの２組を互いに逆極性にして並列に接
続した直並列接続サイリスタ整流回路毎に、互い
に逆極性にして直列に接続した２個のダイオード
の中間接続点に一端を接続した光補助サイリスタ
を、前記２個のダイオードを介して結合させるこ
とにより、前記２組のサイリスタを前記光補助サ
イリスタの制御によつて交互に点弧させるように
したことを特徴とするものである。 That is, the anti-parallel thyristor ignition device of the present invention has two sets of two thyristors connected in series with the same polarity and connected in parallel with each other in opposite polarities for each series-parallel connected thyristor rectifier circuit. By coupling an optically auxiliary thyristor, one end of which is connected to the intermediate connection point of two diodes connected in series, through the two diodes, the two sets of thyristors can be controlled by the optically auxiliary thyristor. This feature is characterized in that the ignition is performed alternately.
以下に図面を参照して本発明を詳細に説明す
る。 The present invention will be described in detail below with reference to the drawings.
本発明逆並列サイリスタ点弧装置の構成例を第
５図に示す。図示の構成においては、それぞれ同
一極性に直列接続した主サイリスタTH１，TH
３およびTH２，TH４を互いに逆極性に並列接
続し、それら主サイリスタ直列接続の中間接続点
に共通に一端を接続した光補助サイリスタPTH
１の他端を互いに逆極性に直列接続した２個のダ
イオードＤ１およびＤ２の中間接続点に接続し、
さらに、それらのダイオードＤ１およびＤ２をパ
ルストランスPT１およびPT２の一次側にそれぞ
れ接続し、それらのパルストランスPT１および
PT２の２次側をそれぞれ主サイリスタTH１，
TH３およびTH２，TH４の制御グリツドに接
続してある。各主サイリスタには、サージ吸収お
よび電圧分担均等化のために、抵抗とコンデンサ
との直列回路から成るいわゆるスナバ回路が並列
接続されているが、図示は省略してある。かかる
回路構成において、主サイリスタTH１，TH３
が順電圧、主サイリスタTH２，TH４が逆電圧
の場合には、ダイオードＤ１がオン状態、ダイオ
ードＤ２がオフ状態となるために、光補助サイリ
スタPTH１には主サイリスタTH３もしくはTH
４の電圧しか印加されず、さらに、その状態にお
いて光補助サイリスタPTH１に光信号が印加さ
れるとその光補助サイリスタPTH１がオン状態
となり、主サイリスタTH３，TH４に並列接続
されている図示されていないスナバ回路のコンデ
ンサの電荷が光補助サイリスタPTH１、ダイオ
ードＤ１およびパルストランスPT１の１次巻線
を通して放電し、これによりパルストランスPT
１を介して主サイリスタTH１およびTH３にゲ
ートパルスを印加することになる。 An example of the configuration of the anti-parallel thyristor ignition device of the present invention is shown in FIG. In the configuration shown, the main thyristors TH1 and TH are connected in series with the same polarity, respectively.
Optical auxiliary thyristor PTH in which 3, TH2, and TH4 are connected in parallel with opposite polarities, and one end is commonly connected to the intermediate connection point of the main thyristor series connection.
The other end of 1 is connected to the intermediate connection point of two diodes D1 and D2 connected in series with mutually opposite polarities,
Furthermore, those diodes D1 and D2 are connected to the primary sides of pulse transformers PT1 and PT2, respectively, and
The secondary side of PT2 is connected to the main thyristor TH1,
It is connected to the control grids of TH3 and TH2, TH4. A so-called snubber circuit consisting of a series circuit of a resistor and a capacitor is connected in parallel to each main thyristor in order to absorb surges and equalize voltage sharing, but is not shown. In this circuit configuration, the main thyristors TH1 and TH3
is a forward voltage and main thyristors TH2 and TH4 are reverse voltages, diode D1 is on and diode D2 is off.
When only a voltage of 4 is applied, and in that state, an optical signal is applied to the optical auxiliary thyristor PTH1, the optical auxiliary thyristor PTH1 turns on and is connected in parallel to the main thyristors TH3 and TH4 (not shown). The charge on the capacitor of the snubber circuit is discharged through the optically assisted thyristor PTH1, the diode D1 and the primary winding of the pulse transformer PT1, which causes the pulse transformer PT
A gate pulse will be applied to the main thyristors TH1 and TH3 via TH1.
また、上述とは反対に、主サイリスタTH２，
TH４が順電圧、主サイリスタTH１，TH３が
逆電圧の場合には、ダイオードＤ１がオフ状態、
ダイオードＤ２がオン状態になるために、光補助
サイリスタPTH１には主サイリスタTH２もし
くはTH１の電圧しか印加されず、さらに、この
状態において光補助サイリスタPTH１が光信号
を印加されてオン状態になると、パルストランス
PT２を介して主サイリスタTH２およびTH４に
ゲートパルスを印加することになる。 Moreover, contrary to the above, the main thyristor TH2,
When TH4 is a forward voltage and main thyristors TH1 and TH3 are a reverse voltage, the diode D1 is in the off state,
In order for the diode D2 to turn on, only the voltage of the main thyristor TH2 or TH1 is applied to the optically auxiliary thyristor PTH1.Furthermore, in this state, when the optically auxiliary thyristor PTH1 is applied with an optical signal and turns on, a pulse is generated. Trance
A gate pulse will be applied to main thyristors TH2 and TH4 via PT2.
したがつて、光補助サイリスタPTH１には、
如何なる場合にも主サイリスタ１素子分の電圧し
か印加されず、主サイリスタTH１〜TH４のう
ち、順電圧となる主サイリスタに対して自動的に
振り分けてゲートパルスを供給し、それらの主サ
イリスタTH１，TH３もしくはTH２，TH４を
交互に点弧させることになる。 Therefore, the optically assisted thyristor PTH1 has
In any case, only the voltage for one main thyristor element is applied, and gate pulses are automatically distributed to the main thyristors TH1 to TH4 that have forward voltage, and the gate pulses are supplied to the main thyristors TH1, TH4. TH3 or TH2 and TH4 will be fired alternately.
つぎに、本発明逆並列サイリスタ点弧装置の他
の構成例を第６図に示す。図示の構成例において
は、上述の構成例と同様に２直列逆並列接続にし
た主サイリスタTH１，TH３およびTH２，TH
４の各中間接続点に、共通に接続したパルストラ
ンスPT１の一次コイルを介して一端を接続した
光補助サイリスタPTH１の他点を、互いに逆極
性にして直列に接続したダイオードＤ１およびＤ
２の中間接続点に接続し、それらのダイオードＤ
１，Ｄ２の他端を交流電圧源にそれぞれ接続する
とともに、パルストランスPT１の二次コイルを
各主サイリスタTH１〜TH４の制御グリツドに
それぞれ接続したものである。かかる回路構成に
おいても、上述の構成例におけると同様に、光補
助サイリスタPTH１には主サイリスタ１素子分
の電圧しか印加されず、しかも、主サイリスタ
TH１〜TH４の電圧極性には関係なく、単一の
パルストランスPT１によつて個別にゲートパル
スを印加し得るように回路構成を簡単化してあ
る。 Next, FIG. 6 shows another example of the configuration of the anti-parallel thyristor ignition device of the present invention. In the illustrated configuration example, the main thyristors TH1, TH3 and TH2, TH are connected in series and anti-parallel as in the above configuration example.
The optically auxiliary thyristor PTH1 has one end connected to each intermediate connection point of 4 through the primary coil of the commonly connected pulse transformer PT1, and diodes D1 and D are connected in series with opposite polarities to each other.
2 and their diodes D
The other ends of pulse transformer PT1 and D2 are connected to an alternating current voltage source, and the secondary coils of pulse transformer PT1 are connected to control grids of main thyristors TH1 to TH4, respectively. In this circuit configuration, as in the above configuration example, only the voltage equivalent to one main thyristor element is applied to the optically auxiliary thyristor PTH1, and moreover, the main thyristor
The circuit configuration is simplified so that gate pulses can be applied individually by a single pulse transformer PT1, regardless of the voltage polarity of TH1 to TH4.
つぎに、第５図示の回路構成におけるとほぼ同
様に構成した２直列逆並列接続の主サイリスタ
TH１〜TH４における故障発生を、単一の点弧
用光補助サイリスタPTH１の電流を監視するこ
とにより監視し得ることにした場合における本発
明逆並列サイリスタ点弧装置の構成例を第７図に
示す。図示の構成例においては、点弧用光補助サ
イリスタPTH１の電流を、抵抗RD１およびRD
２によつて分流し、抵抗RD２に流れる一部の電
流を発光ダイオードLED１に流して発光させ、
その出力発光をライトガイド等を介して監視する
ようにしてある。なお、発光ダイオードの電流発
光特性によつては、光補助サイリスタPTH１の
電流を分流せずに直接に発光ダイオードLED１
に流すようにすることもできる。かかる回路構成
においては、主サイリスタTH１〜TH４に対し
て、図に示すように、自己点弧回路ST１〜ST４
をそれぞれ個別に接続して点弧させるようにし、
サイリスタ電圧が素子耐圧以下の一定の保護レベ
ルに達したことをそれらの自己点弧回路ST１〜
ST４によりそれぞれ検出して、それぞれの主サ
イリスタTH１〜TH４にゲートパルスを印加し
て点弧させることにより、過電圧から保護するよ
うにしてある。 Next, a main thyristor with two series and anti-parallel connections configured almost in the same way as in the circuit configuration shown in Figure 5.
FIG. 7 shows an example of the configuration of the anti-parallel thyristor ignition device of the present invention in the case where it is decided that the occurrence of a failure in TH1 to TH4 can be monitored by monitoring the current of a single ignition optically auxiliary thyristor PTH1. . In the illustrated configuration example, the current of the ignition light-assisted thyristor PTH1 is connected to the resistor RD1 and RD
2, and part of the current flowing through the resistor RD2 is passed through the light emitting diode LED1 to cause it to emit light.
The output light emission is monitored via a light guide or the like. Note that depending on the current emission characteristics of the light-emitting diode, the current of the photo-auxiliary thyristor PTH1 may be directly connected to the light-emitting diode LED1 without being shunted.
You can also make it flow to In this circuit configuration, self-ignition circuits ST1 to ST4 are connected to main thyristors TH1 to TH4, as shown in the figure.
connect each separately and ignite it,
When the thyristor voltage reaches a certain protection level below the element withstand voltage, the self-ignition circuit ST1~
Each of the main thyristors TH1 to TH4 is detected by ST4, and a gate pulse is applied to each of the main thyristors TH1 to TH4 to cause them to fire, thereby protecting them from overvoltage.
つぎに、第７図に示したサイリスタ故障監視可
能の本発明逆並列サイリスタ点弧回路を交流電力
装置に適用した場合の例を第８図に示し、その各
部動作波形を第９図に示す。第９図に示す各部動
作波形において、波形Ａは主サイリスタTH１，
TH２の電圧、波形Ｂは主サイリスタTH３，
TH４の電圧、波形Ｃ，Ｄ，Ｅ，Ｆは、それぞ
れ、主サイリスタTH１，TH３，TH２および
TH４に印加するゲートパルス、波形Ｇは発光ダ
イオードLED１に流れる監視用電流の各波形を
示したものである。また、波形Ｃ〜Ｆの各ゲート
パルスに付記した数字のうち、１，２はそれぞれ
パルストランスPT１，PT２から印加するゲート
パルスであることを示し、３は自己点弧回路ST
１が動作して印加したゲートパルスであることを
示している。なお、図示の動作波形は、主サイリ
スタTH３もしくはTH４に短絡破壊が生じた場
合の例を示したものであり、主サイリスタTH３
もしくはTH４の電圧が零であるために、主サイ
リスタTH１が順電圧となる期間にその主サイリ
スタTH１を点弧させようとしても、パルストラ
ンスPT１を介してゲートパルスを印加すること
ができない。したがつて、主サイリスタTH１
は、他の直列主サイリスタTH３が点弧するため
に印加電圧が跳ね上ることになるが、自己点弧回
路ST１が作動して過電圧印加を免がれて保護さ
れる。その際、光補助サイリスタPTH１には電
流が流れず、したがつて、発光ダイオードLED
１にも電流が流れない。すなわち、主サイリスタ
TH３もしくはTH４に障害が発生していると、
主サイリスタTH１，TH３が順電圧となる期間
に光補助サイリスタPTH１に点弧用光信号が印
加された直後に発光ダイオードLED１からの監
視用光信号が得られないことになり、したがつ
て、主サイリスタTH３もしくはTH４の故障を
検出し得ることになる。 Next, FIG. 8 shows an example in which the anti-parallel thyristor ignition circuit of the present invention capable of monitoring thyristor failure shown in FIG. 7 is applied to an AC power device, and FIG. 9 shows the operating waveforms of each part thereof. In the operation waveforms of each part shown in Fig. 9, waveform A is the main thyristor TH1,
The voltage of TH2, waveform B is the main thyristor TH3,
The voltage of TH4, waveforms C, D, E, F are the main thyristors TH1, TH3, TH2 and
The gate pulse applied to TH4 and the waveform G indicate the waveforms of the monitoring current flowing through the light emitting diode LED1. Also, among the numbers added to each gate pulse of waveforms C to F, 1 and 2 indicate the gate pulses applied from the pulse transformers PT1 and PT2, respectively, and 3 indicates the self-ignition circuit ST
1 indicates a gate pulse that is activated and applied. Note that the illustrated operating waveform is an example of a case where short-circuit damage occurs in main thyristor TH3 or TH4.
Alternatively, since the voltage of TH4 is zero, even if an attempt is made to fire the main thyristor TH1 during a period when the main thyristor TH1 has a forward voltage, a gate pulse cannot be applied via the pulse transformer PT1. Therefore, the main thyristor TH1
In this case, the applied voltage jumps because the other series main thyristor TH3 is fired, but the self-ignition circuit ST1 operates and is protected from overvoltage application. At that time, no current flows through the photo-assisted thyristor PTH1, and therefore the light-emitting diode LED
No current flows to 1. i.e. the main thyristor
If a failure occurs in TH3 or TH4,
Immediately after the ignition optical signal is applied to the optically auxiliary thyristor PTH1 during the period when the main thyristors TH1 and TH3 are at forward voltage, the monitoring optical signal from the light emitting diode LED1 cannot be obtained, and therefore the main This means that a failure of thyristor TH3 or TH4 can be detected.
また、同様にして、主サイリスタTH１もしく
はTH２に障害が発生すると、主サイリスタTH
１，TH３が逆電圧となる期間に発光ダイオード
LED１からの監視用光信号が得られず、したが
つて、主サイリスタTH１もしくはTH２の故障
を検出し得ることになる。 Similarly, if a failure occurs in the main thyristor TH1 or TH2, the main thyristor TH
1. During the period when TH3 is a reverse voltage, the light emitting diode
A monitoring optical signal cannot be obtained from LED1, and therefore a failure of main thyristor TH1 or TH2 can be detected.
以上の説明から明らかなように、本発明によれ
ば、逆並列サイリスタ整流回路に設けた光補助サ
イリスタ点弧回路に介挿したダイオードＤ１，Ｄ
２により、主サイリスタTH１，TH２もしくは
TH３，TH４の１素子分の電圧しか点弧用光補
助サイリスタには印加されないのであるから、高
耐圧の光補助サイリスタを必要とせず、点弧回路
の使用部品数を削減してその構成を簡単化、低廉
化することができ、また、装置の信頼性を向上さ
せることができる。さらに、主サイリスタの障害
発生に対する監視についても、主サイリスタに個
別の監視手段を設ける必要がなくなり、２直列逆
並列接続の４個の主サイリスタ共通の１個の光補
助サイリスタの電流を監視することのみで所要の
障害発生監視を行なうことができ、しかも、光補
助サイリスタに流れる電流は幅の狭いパルス電流
であるので、その電流監視用の発光ダイオードに
流れる電流もパルス電流となり、発光ダイオード
の責務が軽減されるとともに、障害発生監視手段
の信頼性を向上させ、長寿命化することができ
る。 As is clear from the above description, according to the present invention, the diodes D1 and D inserted in the optically auxiliary thyristor firing circuit provided in the anti-parallel thyristor rectifier circuit
2, the main thyristor TH1, TH2 or
Since only the voltage for one element of TH3 and TH4 is applied to the ignition optical auxiliary thyristor, there is no need for a high voltage auxiliary thyristor, reducing the number of parts used in the ignition circuit and simplifying its configuration. It is possible to reduce the cost and improve the reliability of the device. Furthermore, regarding monitoring of the occurrence of a failure in the main thyristor, it is no longer necessary to provide a separate monitoring means for the main thyristor, and it is now possible to monitor the current of one optical auxiliary thyristor that is common to the four main thyristors connected in two series and anti-parallel. Moreover, since the current flowing through the optically auxiliary thyristor is a narrow pulse current, the current flowing through the light emitting diode for current monitoring is also a pulse current, and the light emitting diode's responsibility is In addition, the reliability of the failure occurrence monitoring means can be improved and its lifespan can be extended.
なお、以上の説明においては、サイリスタ直列
回路の並列接続数を２としたが、２以上の直並列
サイリスタを逆並列メツシユ接続にして構成され
るサイリスタ整流回路の各サイリスタスイツチ素
子全般に本発明点弧装置を適用することができ
る。 In the above explanation, the number of parallel connections in the thyristor series circuit is assumed to be two, but the points of the present invention generally apply to each thyristor switch element of a thyristor rectifier circuit configured by connecting two or more series-parallel thyristors in an anti-parallel mesh connection. An arc device can be applied.
また、結果的に逆並列接続となるような装置、
例えば、非循環電流方式の可逆レオナード装置や
非循環電流方式のサイクロコンバータ等において
も、サイリスタの直列数が２以上である装置であ
れば、前述したと同様に本発明を適用することが
できる。 Also, devices that result in anti-parallel connection,
For example, the present invention can be applied to non-circulating current type reversible Leonard devices, non-circulating current type cycloconverters, etc. as long as the number of thyristors connected in series is two or more.
第１図乃至第３図は従来のサイリスタ点弧装置
の構成例をそれぞれ示す回路図、第４図は同じく
その他の構成例を示す回路図、第５図および第６
図は本発明逆並列サイリスタ点弧装置の構成例を
それぞれ示す回路図、第７図は同じくその他の構
成例を示す回路図、第８図は第７図示の本発明装
置を適用した交流電力装置の構成例を示す回路
図、第９図は同じくその各部動作波形を示す波形
図である。
TH１〜THn…主サイリスタ、PTH１〜
PTHn…光補助サイリスタ、Ｒ１〜Rn，RG１〜
RG５，RD１，RD２，RS１〜RSｎ／２…抵抗、Ｄ
１〜Ｄ１０…ダイオード、PT１，PT２…パルス
トランス、ST１〜STn…自己点弧回路。
1 to 3 are circuit diagrams showing examples of the configuration of a conventional thyristor ignition device, FIG. 4 is a circuit diagram showing another example of the configuration, and FIGS.
The figures are circuit diagrams each showing a configuration example of the anti-parallel thyristor ignition device of the present invention, FIG. 7 is a circuit diagram similarly showing another configuration example, and FIG. 8 is an AC power device to which the device of the present invention shown in FIG. 7 is applied. FIG. 9 is a circuit diagram showing an example of the configuration, and FIG. 9 is a waveform diagram showing the operation waveforms of each part thereof. TH1~THn...Main thyristor, PTH1~
PTHn…Optical auxiliary thyristor, R1~Rn, RG1~
RG5, RD1, RD2, RS1 to RSn/2...Resistor, D1 to D10...Diode, PT1, PT2...Pulse transformer, ST1 to STn...Self-ignition circuit.
Claims (1)
サイリスタの２組を互いに逆極性にして並列に接
続し、且つ前記各組の２個のサイリスタの中間接
続点同士を互いに接続し、各サイリスタにサージ
吸収および電圧分担回路を並列接続した直並列接
続サイリスタ整流回路と、 該整流回路における前記中間接続点に一端を接
続した光補助サイリスタと、 ２個のダイオードを互いに逆極性にして直列に
接続し、該中間接続点に前記光補助サイリスタの
他端を接続し、両端を前記整流回路の両端に接続
したダイオード回路と、 前記光補助サイリスタの電流路または前記ダイ
オード回路の各ダイオードの電流路に介装した、
前記２組のサイリスタを点弧するための点弧回路
とを具えたことを特徴とする逆並列サイリスタ点
弧装置。 ２ 特許請求の範囲第１項記載の逆並列サイリス
タ点弧装置において、前記光補助サイリスタの電
流路には、当該光補助サイリスタに流れる電流を
監視して前記直並列接続サイリスタ整流回路の障
害の発生を監視する手段が設けられていることを
特徴とする逆並列サイリスタ点弧装置。[Claims] 1. Two sets of two thyristors connected in series with the same polarity are connected in parallel with each other with opposite polarities, and the intermediate connection points of the two thyristors of each set are connected to each other. a series-parallel connected thyristor rectifier circuit in which a surge absorption and voltage sharing circuit is connected in parallel to each thyristor; an optically auxiliary thyristor with one end connected to the intermediate connection point in the rectifier circuit; and two diodes with opposite polarity to each other. a diode circuit connected in series with each other, the other end of the optical auxiliary thyristor is connected to the intermediate connection point, and both ends are connected to both ends of the rectifier circuit; and a current path of the optical auxiliary thyristor or each of the diode circuits. Interposed in the current path of the diode,
An anti-parallel thyristor ignition device comprising an ignition circuit for igniting the two sets of thyristors. 2. In the anti-parallel thyristor ignition device according to claim 1, the current path of the optically auxiliary thyristor is configured to monitor the current flowing through the optically auxiliary thyristor to detect the occurrence of a failure in the series-parallel connected thyristor rectifier circuit. An anti-parallel thyristor ignition device characterized in that it is provided with means for monitoring.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4027481A JPS57155838A (en) | 1981-03-23 | 1981-03-23 | Anti-parallel thyristor triggering device |
| DE19823210484 DE3210484C2 (en) | 1981-03-23 | 1982-03-22 | Ignition circuit for anti-parallel connected thyristors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4027481A JPS57155838A (en) | 1981-03-23 | 1981-03-23 | Anti-parallel thyristor triggering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57155838A JPS57155838A (en) | 1982-09-27 |
| JPS637689B2 true JPS637689B2 (en) | 1988-02-18 |
Family
ID=12576046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4027481A Granted JPS57155838A (en) | 1981-03-23 | 1981-03-23 | Anti-parallel thyristor triggering device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS57155838A (en) |
| DE (1) | DE3210484C2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3426769A1 (en) * | 1984-07-17 | 1986-01-23 | Siemens Ag | CIRCUIT ARRANGEMENT FOR MONITORING A THYRISTOR |
| DE3627017A1 (en) * | 1986-08-09 | 1988-02-18 | Licentia Gmbh | High-voltage semiconductor contactor |
| DE3731393A1 (en) * | 1987-09-18 | 1989-04-06 | Bosch Gmbh Robert | HIGH VOLTAGE SWITCH |
| DE19844823C1 (en) * | 1998-09-30 | 1999-10-28 | Siemens Ag | Thyristor circuit for high power static converter |
-
1981
- 1981-03-23 JP JP4027481A patent/JPS57155838A/en active Granted
-
1982
- 1982-03-22 DE DE19823210484 patent/DE3210484C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57155838A (en) | 1982-09-27 |
| DE3210484A1 (en) | 1982-09-30 |
| DE3210484C2 (en) | 1983-12-01 |
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